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Finding the Fourth Proportional to 547,459.47, 755,486.60 and 305,746.29

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Solution

The fourth proportional to 547,459.47, 755,486.60 and 305,746.29 is: 421,925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,459.47 : 755,486.60 = 305,746.29 : x
  2. Step 2: Convert to fraction form
    547,459.47/755,486.60 = 305,746.29/x
  3. Step 3: Cross multiply
    547,459.47x = 755,486.60 × 305,746.29
  4. Step 4: Simplify right side
    547,459.47x = 230,987,223,565.98
  5. Step 5: Solve for x
    x = 230,987,223,565.98/547,459.47
  6. Step 6: Final answer
    x = 421,925.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.